I've always had bronchitis. I've been administered the Sacrament of Death three times for it.
But the mechanics of learning to 'throw your voice' are pretty simple. Anyone with a tongue an upper palate teeth and a normal speaking voice can learn ventriloquism.
When I was eight years old I got a dummy for Christmas and started teaching...
In school, I studied psychology, linguistics, neuroscience. I understand...
Any fool can know. The point is to understand.
If you want to learn something, just steal it